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If P (x,y) be any point on 16x^(2) +...

If P (x,y) be any point on ` 16x^(2) + 25y^(2) = 400` with foci ` F_(1) (3,0) and F_(2) (-3,0)` then ` PF_(1) + PF_(2)` is

A

6

B

8

C

12

D

10

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SURA PUBLICATION-MODAL QUESTION PAPER-PART - I
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  2. The range of sec^(-1)x is

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  3. If P (x,y) be any point on 16x^(2) + 25y^(2) = 400 with foci F(1)...

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  4. If the length of the perpendicular from the origin to the plane 2x+3y+...

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  8. If z is any complex number, then the points z,iz,-z,-iz

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  9. If sinalphaandcosalpha are the roots of 25x^(2)+5x-12=0 then the value...

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  10. If a and b are odd integers then the roots of the equation 2ax^(2)+(2a...

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  11. If 4cos^(-1)x+sin^(-1)x=pi, then x is

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  17. If adj A = [(2,3),(4,-1)] and adj B = [(1,-2),(-3,1)] then adj (AB) is

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  18. If |z-2 + i|le2, then the greatest value of |z| is

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  19. If x^(2)+y^(2)=1, then the value of (1+x+iy)/(1+x-iy).

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